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  <title>Release Notes &raquo; Release 2.6.0 (2020/08/25) | Taskflow QuickStart</title>
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        <h1>
          <span class="m-breadcrumb"><a href="Releases.html">Release Notes</a> &raquo;</span>
          Release 2.6.0 (2020/08/25)
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          <h3>Contents</h3>
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            <li><a href="#release-2-6-0_download">Download</a></li>
            <li><a href="#release-2-6-0_new_features">New Features</a></li>
            <li><a href="#release-2-6-0_bug_fixes">Bug Fixes</a></li>
            <li><a href="#release-2-6-0_deprecated_items">Deprecated Items</a></li>
            <li><a href="#release-2-6-0_miscellaneous_items">Miscellaneous Items</a></li>
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<p>Taskflow 2.6.0 is the 8th release in the 2.x line! This release includes several new changes such as CPU-GPU tasking, algorithm collection, enhanced web-based profiler, documentation, and unit tests.</p><p>We have a new <a href="https://taskflow.github.io/">webpage</a> for Taskflow!</p><section id="release-2-6-0_download"><h2><a href="#release-2-6-0_download">Download</a></h2><p>Taskflow 2.6.0 can be downloaded from <a href="https://github.com/taskflow/taskflow/releases/tag/v2.6.0">here</a>.</p></section><section id="release-2-6-0_new_features"><h2><a href="#release-2-6-0_new_features">New Features</a></h2><ul><li>added explicit join behavior of <a href="classtf_1_1Subflow.html" class="m-doc">tf::<wbr />Subflow</a> (see <a href="SubflowTasking.html#JoinASubflow" class="m-doc">Join a Subflow</a> and <a href="fibonacci.html" class="m-doc">Fibonacci Number</a>)</li><li>added version macro (<code>TF_VERSION</code>, <code>TF_MAJOR_VERSION</code>, <code>TF_MINOR_VERSION</code>, <code>TF_PATCH_VERSION</code>) to retrieve version info programmatically (<a href="namespacetf.html#a30fa078dcf625e9eada5a95af1467588" class="m-doc">tf::<wbr />version</a>)</li><li>added <code>TF_BUILD_TESTS</code> and <code>TF_BUILD_EXAMPLES</code> (default on) to let users disable the build of tests and examples (see <a href="install.html" class="m-doc">Building and Installing</a>)</li><li>renamed tf::Taskflkow::parallel_for to <a href="classtf_1_1FlowBuilder.html#aae3edfa278baa75b08414e083c14c836" class="m-doc">tf::<wbr />Taskflow::<wbr />for_each</a> to follow the STL convention</li><li>redesigned <a href="classtf_1_1FlowBuilder.html#aae3edfa278baa75b08414e083c14c836" class="m-doc">tf::<wbr />Taskflow::<wbr />for_each</a> and <a href="classtf_1_1FlowBuilder.html#a3b132bd902331a11b04b4ad66cf8bf77" class="m-doc">tf::<wbr />Taskflow::<wbr />for_each_index</a> using OpenMP-styled scheduling algorithms; this redesign largely improved the performance of parallel-for using a single dynamic task return, but it breaks the previous API that returned a <a href="http://en.cppreference.com/w/cpp/utility/pair.html" class="m-doc-external">std::<wbr />pair</a> of tasks to synchronize on a set of static parallel-for tasks. Yet, we believe adopting this change is not difficult (see <a href="ParallelIterations.html" class="m-doc">Parallel Iterations</a>).</li><li>added multiple unit tests for <a href="classtf_1_1FlowBuilder.html#aae3edfa278baa75b08414e083c14c836" class="m-doc">tf::<wbr />Taskflow::<wbr />for_each</a> and <a href="classtf_1_1FlowBuilder.html#a3b132bd902331a11b04b4ad66cf8bf77" class="m-doc">tf::<wbr />Taskflow::<wbr />for_each_index</a> at different partition algorithms; we have implemented our partition algorithms based on the OpenMP library implementation of LLVM and GCC.</li><li>added Mandelbrot application in the benchmark to evaluate the performance of parallel-for</li><li>redesigned <a href="classtf_1_1FlowBuilder.html#afb24798ebf46e253a40b01bffb1da6a7" class="m-doc">tf::<wbr />Taskflow::<wbr />reduce</a> and <a href="classtf_1_1FlowBuilder.html#aa62d24438c0860e76153ffd129deba41" class="m-doc">tf::<wbr />Taskflow::<wbr />transform_reduce</a> based on the parallel architecture of <a href="classtf_1_1FlowBuilder.html#aae3edfa278baa75b08414e083c14c836" class="m-doc">tf::<wbr />Taskflow::<wbr />for_each</a> (see <a href="ParallelReduction.html" class="m-doc">Parallel Reduction</a>).</li></ul></section><section id="release-2-6-0_bug_fixes"><h2><a href="#release-2-6-0_bug_fixes">Bug Fixes</a></h2><ul><li>fixed the bug of iteratively detaching a subflow from a run loop or a condition loop (see <a href="SubflowTasking.html#DetachASubflow" class="m-doc">Detach a Subflow</a>)</li><li>fixed the bug of conflict macro with boost (<a href="https://github.com/taskflow/taskflow/issues/184">#184</a>)</li></ul></section><section id="release-2-6-0_deprecated_items"><h2><a href="#release-2-6-0_deprecated_items">Deprecated Items</a></h2><ul><li>removed two methods, tf::detached and tf::joined, due to the new join/detach behavior</li></ul></section><section id="release-2-6-0_miscellaneous_items"><h2><a href="#release-2-6-0_miscellaneous_items">Miscellaneous Items</a></h2><ul><li>improved the section <a href="ExecuteTaskflow.html#ObserveThreadActivities" class="m-doc">Observe Thread Activities</a></li></ul></section>
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